Chemistry 1
Noble Gases (other than He) have this many valence electrons
8, Helium has a full valence shell with only 2 valence electrons
True or False, elements are more stable in a chemical bond then on their own.
True
True or False, Sodium forms an anion in an ionic bond
false, sodium is metal and it gives up electrons to form a positive cation that is then attracted to a negative anion in an ionic bond.
Atoms share electrons in this type of bond
Covalent bond (between only non metals.)
What type of bond is represented by this image
This Lewis drawing of the electron dot structure for oxygen is of a double bond.
This theory describes how the geometry of a molecule depends on how the valence shell electrons repel each other
VSEPR Theory
Molecules always contain a metal
False, molecules are covalently bonded nonmetals , formula units are ionic bonded metal and nonmetal
Name 3 out of the 4 different types subshells in electron configuration
s, p, d or f
How many orbitals in the p subshell
3 orbitals (2 electrons per orbital for a total of 6 electrons in a p subshell)
polyatomic ion
A mole of copper has this many atoms
6.02 x 10 23
What is the formula for Magnesium Nitrite
Mg(NO2)2
A complete combustion reaction always contains this reactant and these two products
Reactant - O2
Products - CO2 and H2O
The type of bond where electrons are transferred
Ionic Bond
The correct chemical formula for iron (III) phosphate.
What FePO4?
True or False, When hydrogen bonds with F,O,or N a very weak hydrogen bond is formed.
False, when hydrogen bonds with F, O, N the strong difference in electronegativity between the 2 elements forms a STRONG, highly polar covalent bond.
According to VESPR Theory, what is this shape
Tetrahedral
Put the following in order of increasing electronegativity : F, Ca, Br, Ga, K
K, Ca, Ga, Br, F
Empirical formulas show the exact molecular composition of a compound
False, molecular formulas tell you exactly how many atoms are in a molecule, the empirical formula is the simplest ratio of elements in a compound
This is the lowest temperature possible where there is not movement of molecules
absolute zero, 0 Kelvin
This is responsible for metals being excellent conductors of electricity.
In metals, ions are surrounded by the "sea of electrons", which make for excellent conductors of electricity and heat.
Bromine belongs to the _________ group.
Halogen
The sum of protons and neutrons in the nucleus of an atom is known as the _________.
Mass number
A large difference in electronegativity between atoms best describes non polar covalent bond
Non polar covalent bonds have an almost equal sharing of electrons and a similar electronegativity. Ionic bonds have the largest difference in electronegativity.
The measure of the ability of an atom to attract electrons is called its
electronegativity?
Which is a weaker intermolecular force, Hydrogen bonding or London Dispersion Forces?
London Dispersion forces or Van Der Waals forces are the weakest IMFs
MgCl2 is called Magnesium Dichloride
NO, if you see a metal in your compound, run from the prefixes
What is the formula for phosphorous tetrasulfide
PS4 not XBox (lol)
An element has similar chemical properties as nitrogen and phosphorus. It has an atomic number greater than arsenic but less than bismuth. Use the periodic table to identify the element.
antimony?
In a single replacement reaction, gold is able to replace potassium
False, gold is a very unreactive metal and can not replace the highly reactive potassium